AA in BB. Sized Flop Bet Right?

[TomBrooks]

Did I size my bets right, particularly on the flop? The reason I wonder is I am offering 6:1 on the turn which is pretty good odds. For instance, a pair and a gutshot has 9 outs and only needs 4.1:1 to call.

Poker Stars, PL Hold'em Tournament, 100/200 Blinds, 6 Players
LeggoPoker.com - Hand History Converter

BB: 1,640
UTG: 8,731
MP: 8,254
CO: 6,163
BTN: 9,235
Hero (SB): 3,850

Pre-Flop: (300) A A dealt to Hero (SB)
5 folds, CO calls 200, BTN calls 200, Observer folds, Hero raises to 800, CO calls 600, BTN folds

Flop: (1,900) 2 9 J (2 Players - 1 is All-In)
Hero bets 1,900, CO calls 1,900

Turn: (5,700) 7 (2 Players - 1 is All-In)
Hero bets 1,150 and is All-In, CO calls 1,150

River: (8,000) 8 (2 Players - 2 are All-In)